Gst on courier agency

tds files   10 December 2020

We are courier agency. We provide courier service to companies, normal people and 4 banks in our area. we issue invoices to every one and also 4 banks monthly, but payment not received from 4 banks on monthly basis, they paid every 6 months once.

Problem with Only these banks. Remaining every one paid monthly.

My query is, GST paid monthly or 6 months, particularly these Banks?.

Tell me Any solution for payment of 6 months only, otherwise i pay personally my own money.

I file gst every month and paid gst @ 18%. Problem with this Banks only.